Combined hatch cover lock and headrest



Feb. 24, 1,948. R. E1 BIRDSALL 2,435,374

COMBINED HATCH COVER LOCK AND HEADREST Filed May 1`5, 1945 ISnventOr ROBERT E. Bl RDSALL.

` Gtfornegs Patentedl F eb. 24, 1948 Y 25436374 l GoMBmED HAzwnioovEnrLnCK HEADREST Rbbrt Bdall, Detroit; Mich.v Application.-:May3 15;;1945, .,SerillNo. 593,916-,

ICIamsff- (G1. 29m-1T@ (Granted -gmderr the-1: act offMarch- 3; 1883,as amended April 230,@ 1928 37101! QT. G.. 757).

The. invention; described herein:l maygbefsmanue 2 .andvi'ewing windows Slt-around the f 'periphery facturedandusedrbygor for.:therGovernmentIforz: there0f The hatchicoverzhas a,dependingchock1V governmental purposes;V without thezpaymentstof member-ll extending-atrsubstantially3:45? angle;` meiofianyaroyaltythereon.: from 1 said` hatch {coveri 2 .v A support, attachedl Thsf.. mventionz: relatesY generally: to:4 loc'kircgai 5 to thessidej ofi the hatch structure., I by welding-g. members; amtitlis, 4more particularlmyrelatedtto or-I any othensuitablemeansfsuppcrtsJ-lever armY avcomloinedlocktngmembezr; andzhead'restzmem-f- Bpivotally. by meansoi pivot pin 7; Lever. armv ber 'foinuseiiiarmirmorerkvehicle: 6 angular` in fshape and f has f an i offset portion In: the ordinaryfhatchistructure? of' artankf: orf 8 fto which isiattachedia. relativelyY seit materia1;..,. other armored vehicle, a minimum hspace: is.2 10 suchesfrubbertorthelike, tovformia-.headrestw providd for:lockingmembersfrfoithe, atchoover 9adjacent. theviewing` window 3; An. abuttinffF andy for headgrestsnadjacentsthe'viewingWine-f" member II is attachedtothebackof the head"J dowsiirrith liatchistrncturea Loclcingimembersf restffby.- a boltmemher 52j An. adjusting'.` memheretofore` provided-2wereanotsquckiy and auto'U ber@ I iwith a.: threaded head screw` ILi-threadablm Y maticallwoperablezandzextendedihtofthe central: l5 disposedV therein abats Aagainst the alonttingl memY portion" of;thefihatchstrncture; thereby;- decrees-'.ff1 ber I I to stop the head rest: i). at any predeter, ingth'e .arearinwhch`1a-per'son:hadto `move-within minedlY position. within. predeterrninedA limits.- All the:v hatchistructrrez, Headtrestsshavealsoir -f loopnr springlmember I5 isspvctally attached; qui-redconsidrable spaceaprcvidedsthemfadjacentz: to-anintermediateportion,of-the lever arm ley,-v the. vieWingi-:Windowsr No: previousfrdev'ceflias 20 a-.pin:Iasslfiovvn-nignref2.` The leverrwhen, been-provided' for." adjusting therh'eachrest.` forced towardsfthetside of y thev hatchstructurer.

Itis';.acoordingly,1an:o:hjccttofimy invention:to` I and against the abuttingmember- I3 andlhead.-

overcome-ftheahovezardfother' defe'ctsrufidockirxgf screw; h3 throws the spring.` member i5- attached" meansf forrhatcharcoversf and;E in hearil:rests@forf, todepending hooke-vbeyondzadead.centenpoinh. viewing Windows'finarriatchastructuraand it andthereby locks` the hatchicover ina-closedh moreparticuiarly an ob'iectflof,finy;invention;tcl-2` positioni- 'Ihespring-'member imaintains aten.-y prov'deaiccmloiriedliloekii'igmember for a hatch sionzontheehatchfcover Ztomaintain it-inrafse-fcover anda head rest for disposal adjacent a cu-rely'fclosed-position. Thefhead-rest;9..isthenviewing windowl'iri a hatch-structure which is disnosed adjacent. an viewing window 1=whereinr. simple inA constructiomr-eoonomical.incost, efii- 30 thefforehead ofvanfobserver-mayirestagainst-the: cient in operation, requires a minir'nunroie-spacer` head restwhilepeeringthronghtheviewing win,V and is automatic in operation. dow Ahead restfislabsoluteiy, necessaryy in i, a... Another loh'jecti offri/1y#k invention is'to' provide combatve-'ehiclefpassing over rough terrain! bea quicklyg'attachable and releasable locking=memi causeno i the swayingk and-.pitching of. thezmaaber fora hatch cover and a header-est adjacent 35 chine,l Whenthelleverfarm 5112s pulled tovafposii-V aviewing window in a hatchrstructure whichffis tioniwherefitfrctates connter-clockwise fromlxa..Vv dispjos-ed'iin;aeminimum of vspace;adjacenttortille positie-rrshownvin;Figure 2, it. automatically as-v innerj Wall ofta hatch structureand withontf clo-n sumesf alnositionias-shown-inthe dottedilines vin..A structing the hatchway i Figure :2 vwhenfit .passesdeadcenter in a-countere Another object of myinvention is to provide 40 clockwise direction.- Itpwilltbepseenthat when adjusting *means* f'I the hea@ IeSi'f adjacent a my novel: locking Vmeans is fin-a,` closed positie-nf` Ve1`c111 vi tothe alcfthe-:hatchstructured; andithethea f' Othen objects .;1f rny;:inventionffvvill` becomelevi'- dent fr'om` the following detailed description, 45 takenfin conjunction with the accorrxpanyiner drawingsfin which:

Figure 1 is a plan view of al hatch structure with the hatch cover shown closed and with viewresttendsitoiprovid:a,safetyff'eatureatoprevehif accidents from any person bumping against theVK hatch cover lock instead of the hatch structure.` A spring I1 carried by the lever arm 6 and secured thereto by the pin IIi holds the leverY o in a locked mg Windows therearound; Y 50 position and also in the open position shown in Figure 2 is a fragmentary sectional View taken Flgure 2 by d0tted-1mesj on the 1in@ 2 2 of Figure 1 and From the foregoing, 1t will be seen that I have Figure 3 is a, side elevational View taken from provided a novel combined hatch cover locking the center of the hatch structure, means and head rest adjacent a viewing aperture Referring now to the drawings, Figures 1, 2 55 in a'hatch structure which is simple in construcand 3 show ahatch structure I with ahatch cover tion, consumes a minimum of space, is efficient in operation, economical in cost `and. which is adinstable.

Various changes may be made in the specic embodiment of my invention without departing from the spirit thereof, or from the scope of the appended claims.

What I claim is: 1. In combination with a hatch structure having a viewing Window therein and a hatch cover `with a depending locking projection therefor, a

combined cover locking means and head rest Icomprising a support on said hatch structure, Aa lever arm having an offset portion pivotally mounted on said support, a head rest member attached to said oiset portion of said lever arm, 'a locking spring member pivoted on an intermediate portion of said lever arm engageable with said locking projection, said lever arm being pivotally movable in one direction to a locking position beyond dead center relative to said locking projection when said cover is in a closed position, and adjustable means carried by said structure and cooperatively limiting the pivotal movement in said one direction of said lever arm when the latter is in said locking position, said locking spring member engaging said locking projection of said hatch cover to lock the latter in closed position when said lever arm is in said locking position, said head rest being immediate- 1y adjacent said viewing window when said lever arm is in said locking position.

2. A combined cover locking means and head rest as set forth in claim 1, including resilient means for urging said lever arm to said locking position, said resilient means comprising a spring carried by said lever arm, said spring urging said lever arm to said locking position coincident with the pivotal movement of said lever arm in said one direction, said spring being tensioned coincident with the pivotal movement of said lever arm in the other direction. j

3. In a combined hatch cover lock and head rest for armored vehicles having an observation cupola provided with a hatch opening, a cover therefor having a dependent hook member for closing said hatch opening, and a viewing window therein below and adjacent said hatch opening,y

the combination of a pivotally rotatable oiset lever arm pivotally secured at one end to the inside of said cupola and positioned between the` said hatch opening and the said viewing window, said lever arm being pivotally rotatable in one direction to a locking position wherein the other I end of said lever arm is adjacent said viewing ber attached to the other end of said lever arm,

. said head rest member being immediately adjacent the viewing window when the lever arm is at the limit of its pivotal rotation in said one direction in said locking positionwhereby the head rest is in position for use' by an observer within the locked cupola while observing through the viewing window.

4. In combination with an observation cupola having ahatch opening, a cover therefor provided With a depending inner locking projection, and a viewing window therein adjacent said hatch opening, a combined hatch cover lock and head rest comprising a lever arm having an offset portion pivotally secured to the inside wall of said cupola below said hatch opening, a head rest member attached to the oiset portion of said lever arm and a locking spring member pivoted intermediate said lever arm engageable with said locking projection on said hatch cover, said lever arm being pivotally rotatable in one direction to a locking position beyond a dead center relative to said locking projection, said locking f spring member engaging said locking projection of said cover to lock the latter in closed position when said lever arm is in said locking position, said head rest being immediately adjacent said viewing window when said lever arm is in said locking position.

5. The structure of claim 4, wherein adjustable means are provided for limiting the pivotal rotation in said one direction of said lever arm, the said means comprising an adjustable stop member secured to the cupola and an abutment member carried by the head rest member.

6. The structure of claim 4 wherein the head rest comprises a member formed of a relatively soft material secured to said offset portion of said lever arm and positioned so that it will be brought immediately adjacent said viewing window when the lever arm is in locking position and arranged to cooperate with the said lever arm in retaining the said spring member in engagement with the said locking projection when pressed against while being used as a head rest.

ROBERT E. BIRDSALL.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date '783,338 Wardr Feb. 2l, 1905 1,331,874 Priest Feb. 24, 1920 .1,350,713 Ferdon Aug. 24, 1920 1,371,422 Isidor Mar. 15, 1921 1,696,439 Knox Dec, 25, 1928 FOREIGN PATENTS Number Country Date 481,883 Great Britain Mar. 18, 1938 517,624

Germany Feb. 6, 1931 

